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Set semantics
Codex
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Computer science
Database
Database query
2026-10-31
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Database query
results contain no repeated
database tuples
.
SQL
usually
uses
bag semantics
unless duplicate elimination is requested.
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Database query
Database
Computer science
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Past exam of the computer science course of the University of Oxford
/
2015
/
Databases
Past exam of the computer science course of the University of Oxford
/
2015
/
Databases
/
1
/
a
/
i
/
Solution
Past exam of the computer science course of the University of Oxford
/
2015
/
Databases
/
2
/
b
/
Solution
Relational projection
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